Oil-burner.



E. E. HOLMAN.

OIL BURNER. APPLIOATION FILED SEPT. 20, 1911.

Patented Apr. 7, 191i [IV [/5 IV TOR IA/asses.-

EDWARD ELMER I-IOLMAN, OF PORTLAND, OREGON.

s rarnivr FFTFii OIL-BURNER.

rename.

T all whom it may concern:

Be it known that I, E WARD ELMER Honresident of Portland, Multnomah county, State of Oregon, have invented a new and useful Improvement in Oil-Burners, ot which the following is a specification.

This invention relates to devices for burning fuel oil, and the object thereof is to so arrange the devices as to supply the oil to the burner by a gravity feed system; also to assure a constant feed to the nozzle.

My further and particular object is to obtain a burner which will operate with economy and efiiciency; also to provide an improved nozzle for a burner of the type referred to, and to arrange all the parts of my burner in as simple a manner as possible.

I accomplish my objects by the combina tions and devices illustrated in the accompanying drawings, constituting a part hereof, and hereinafter fully described.

In the drawings, Figure 1, is a general perspective view, showing my improved burner used for heating a vertical boiler; Fig.2, is a sectional detail of my burner, also showing particularly the construction of an improved type of nozzle used by me; Fig. 3, is a detail, in perspective, of the improved nozzle of my burner, viewing the nozzle from the front; Fig. 4, is a crosssection of the nozzle on the line ww of Fig.3, and Fig. 5, is a plan section of the nozzle on the line pointed by the arrow, y, in Fig. 2, the dotted outline in this figure representing, for comparison, the cut-away upper portion of the nozzle.

The oil tank, a, is tapped by a primary oil-feed pipe, Z), controlled at its inlet end by a valve, 0, and closed at its outer end by a cap, (Z, affixed on one end of a T, it. There is connected to the pipe, 6, at e, a T-joint, in which is threaded the up-right pipe-member, f, the top end of which is closed by a cap, 9.

The T, h, on the pipe, Z2, has threaded into it a pipe of smaller diameter, 2', controlled by a valve, y, said pipe, '5, being connected by a union, 76, with a nipple, Z, threaded into the globular chamber m, divided by a partition m. In the chamber, at, is also threaded a laterally projecting pipe, 71, constituting the casing of the steam chamber of my burner; and there is further threaded into the chamber m, a vertical nipple 0, connected by a union, 9, with Specification of Letters Patent.

Application filed September 20, 1911.

Patented Apr. 7, dental.

Serial No. 650,481..

a steam pipe, 9 which comes from the boiler I at any convenient place, as at r in Fig. 1. MAX, a citizen of the United States, and

The body of the tip is formed with a neck, a, into which is threaded the casing of the steam chamber, 0. t is also made with a partition, a, into which is threaded the oil e ector pipe, '0, and uch partition forms, with the two side walls, a a, and the bridge, a, a well, which, during the operation of my burner, is constantly filled with oil, which constantly overflows in a thin stream down the inclined outer face of the bridge it. And such hot stream of oil is finally atomized by tlie jet of steam emitted from the steam chamber, 0, through the slit, m, of the nozzle, the latter being formed with a passage way extending under, and the full width of, the oil well 14 The slit, a is formed on a circle so to spread out, laterally, the ensuing flame. I

The steam pipe, 7', is controlled by a valve, .9, and it has a branch, t, controlled by a valve, 6, extending centrally through the primary oil pipe, I), and thence through the chamber, 7".

In operating with my burner, the valve, 0, is first opened, so as to fill the primary oil-pipe, b, the valve, j, of the secondary oil feed pipe, 2', being previously closed. The oil flowing from the tank, a, after filling the primary oil-pipe, b, will rise in the chamber, f, until the gas confined in the upper end of the latter is compressed to such extent as to resist the further rising of the oil in the equalizing chamber. Thenthe fuel will flow to the burner.

It will be noted that by the arrangement of the devices as described, the stream of oil fed through the primary oil-pipe, b, is constantly heated by the steam pipe, 25, and that the oil ejector pipe, '0, is surrounded by the jacket of steam, contained in the chamber, a, and thus the oil, in passing through such ejector-pipe o, is heated to a high temperature before it is discharged into the well, o of the nozzle, a. By these means there is obtained at the slit, a of the nozzle a superheated, highly eliicient, intermixture of steam and atomized oil, producing an intensely hot flame.

I claim:

1. An oil burner comprising a hollow member, a partition dividing said member into two compartments, steam and oil pipes communicating with said compartments respectively, a steam tube leading from the steam compartl'nent, a nozzle on the outer end of said tube, walls in said nozzle forming an open well, an oil tube leading from the oil compartment to said well, the forward wall of said well being of reduced height and having an inclined outer face whereby oil may overflow in a thin sheet, a steam chamber in said nozzle beneath the well, and a steam discharge slit leading from said chamber beneath said inclined wall for the emission of steam through the sheet of oil overflowing said forward wall.

2. An oil burner comprising a hollow member, a partition dividing said member into two compartments, steam and oil pipes communicating with said compartments respectively, a steam tube leading from the steam compartment, a nozzle on the outer end of said tube, walls in said nozzle forming an openwell, an oil tube leading from the oil compartment to said well, the forward wall of said well being of reduced height and having an inclined outer face whereby oil may overflow in a thin sheet, a

steam chamber in said nozzle beneath the well, a steam discharge slit leading from said chamber beneath said inclined wall for the emission of steam through the sheet of oil overflowing said forward wall, and the exterior slitted wall of s aid st eam chamber being convexed so as to spread flame of burning gases. I

3. A fuel-oil burner comprising atubular body, a nozzle affixed on the outlet end of the latter, said nozzle formed onthe exterior with a well hole of which the rear wall is perforated, an oil ejector pipe discharging through such perforated'r'ear wall, the front or bridge wall of the well being of lesser height than the companion walls of said well, whereby is caused a constant overflow of oil over said front or bridge wall, the nozzle being further formed witha steam passageway under the well hole, and said passageway having a slit at the base ofthe front or bridge wall of said well for the emissionof steam through the sheet of oil overflowing said front or bridge wall, the latter being made with an inclined outer face so as to feed the overflowing oil slowly in athin sheet; and the exterior of the outer wall of said slitted steam-passageway of the nozzle being described on an arc in the horizontal plane intersecting said slit, whereby the flame of the burning gases is spread out.

EDW'ARD ELMER HOLMAN.

Witnesses: I

J AMES MACDONALD, W. LEWIS Coor.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.

out the, 

